People · United States
Robert William Marcum
Pyraminx · top 55.5% of 130,891 all-time · competing since December 2023 · 2023MARC36
Robert William Marcum has been competing for 3 years. His best event is the Pyraminx: a personal-best single of 10.31, set at CubingUSA Great Lakes Championship 2024, puts him in the top 55.5% of the 130,891 people who have ever been ranked in the event, and 16,452nd in the United States. Across 5 competitions since December 2023, he has put 83 official solves on the record across five events. Solve to solve, his 3×3 times vary about 19% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 1:26.76 in December 2023 to 45.03, a 48% improvement. Robert has entered five competitions, more competitions than 83% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | United States | |
|---|---|---|---|---|---|
| Pyraminx | 10.31 | 16.21 | top 55.5% | 16,452 / 29,168 | |
| 3×3 | 45.03 | 1:03.78 | top 82.1% | 51,104 / 60,666 | |
| Clock | 38.42 | — | top 92.4% | 8,496 / 9,172 | |
| Skewb | 23.60 | 36.71 | top 93.8% | 18,268 / 19,164 | |
| 2×2 | 18.48 | 33.03 | top 94.4% | 39,863 / 41,674 |
Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.
The line so far
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 4 Oct 2024Four personal bests in one day at CubingUSA Great Lakes Championship 2024.
- 21 Jan 2024First sub-60 3×3: 54.04 at Nimble Hands in Noblesville 2024.
- 17 Dec 2023First competition: Across the Woods Kentucky B 2023. A 1:26.76 3×3 single to start from.
Competitions
- Cincinnati Cube Challenge 2025 · 11 Oct 2025
- CubingUSA Great Lakes Championship 2024 · 4 Oct 2024 — 4 personal bests set
- Oldham County Cubing 2024 · 8 Sep 2024 — 1 personal best set
- Nimble Hands in Noblesville 2024 · 21 Jan 2024 — 2 personal bests set
- Across the Woods Kentucky B 2023 · 17 Dec 2023
Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.
The circuit
The people whose scorecards keep turning up next to his.
- Luke Garrett — met in 19 rounds, never finished ahead
- Braden Richards — met in 19 rounds, never finished ahead
- Keenan Darkins — met in 17 rounds, never finished ahead
Next targets
- A sub-10 Pyraminx single — 69,370 people have one; it is 0.31 away.
- A sub-40 3×3 single — 221,848 people have one; it is 5.03 away.
Targets move as he improves.